研究表明LASIK手术受温度和湿度的影响

    温斯顿-萨乐姆城，北卡罗莱纳州。2004年5月---通过对北卡罗莱纳州368名接受LASIK手术的患者的分析，研究人员发现湿热的天气和续做LASIK有一定关系。在这种天气情况下作的手术平均有15.5%需要进行第二次操作。在九月份，当室外湿度很高时，该比例达到50%，但在冬季干燥的月份，该比例降至0%。

    研究负责人基斯*华特医生是威克弗里斯特大学眼科学的助教，他说高湿度会使角膜由于水合作用产生轻微肿胀，从而导致手术时校正不够。不过他表示这份研究结果并不意味着人们应该避免在夏天作LASIK手术，只是手术师需要将温度和湿度考虑进手术计划，并适当地调节设备和操作方法。

    目前，多数设备制造商已经向各手术中心做了详细推荐，要求他们控制市温和室内湿度，以确保效果的一致性。

华特医生的研究详见《白内障和折射外科杂志》

    LASIK Surgery Affected by Heat and Humidity, Says Study

    WINSTON-SALEM, N.C., May 2004 — Upon analyzing data from 368 LASIK procedures performed in North Carolina, researchers found a correlation between hot, humid weather and the need for follow-up LASIK. An average of 15.5% of the cases needed a second procedure; in the month of September, when outside humidity was high, the figure was 50%, but it was 0% during the drier months of winter.

    Lead researcher Dr. Keith Walter, assistant professor of ophthalmology at Wake Forest University, said that higher humidity causes a small amount of swelling in the cornea due to hydration, which can lead to undercorrection during LASIK. He added that the study results didn't mean that people should avoid LASIK in the summer but that LASIK surgeons need to take temperature and humidity into account when planning their procedures and adjust their equipment and methods accordingly.

    Laser manufacturers do make specific recommendations to laser centers to regulate their room temperature and humidity levels to ensure consistent patient results.

    Dr. Walter's study was published in the Journal of Cataract and Refractive Surgery.

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